Sleeve-valve engine.



F. R. PORTER.

SLEEVE VALVE ENGiNE. APPLlCATlON HLED DEC-28.1915.

Patented Feb. 6, 1917.

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E. PMHER. SLEEVE VALVE ENGINE. APPLICAHGH mm senza. m5.y

Patented Feb. A6, 1917.

5 SHEETS-SHEET 2 "Wzl/*mess F. R. PORTER.

SLEEVE VALVE ENGINE. APPucATloN HLED DEC.28.1915.

1,214,823. Patented Feb. 6, 1917.

' 5 SHEETS-SHEET 3- F. R. PORTER.

SLEEVE VALVE'ENGINE.

APPLICATION msn nic. 2a. |915.

www2; Patented Feb. 6,1917.

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FINIEY R. PORTER, OF PORT JEFFERSON, NEW YORK, ASSIGNOR, BY DIRECT ANDMESNE ASSIGNMENTS, TO KNIGHT AMERICAN PATENTS COMPANY, OF CHICAGO,ILLINOIS, A CORPORATION OF DELAWARE.

SLEEVE-VALVE ENGINE.

'Be itl known `that I, FINLnY R. PORTER, a citizen of the United States,and resident of Portdelferson, in the county of Suffolk and State of NewYork, have invented a new and useful Improvement in Sleeve-ValveEngines, of which the following is a specification.

The object of my invention broadly is to provide a sleeve valve enginewhich will be capable of very high speed without danger of the breakageof parts and in which the proper lubrication'of the Working parts isinsured without excessive smoking at the exhaust.

A practical embodiment of my invention is represented vin theaccompanying drawings, in which' Figure 1 is a detail view partly inside elevation and partly insection, illustrating multi-cylinderexplosion engine, with my improvements embodied therein, Fig. 2 is atransverse vertical section taken in 'the plane of the line AWA of Fig.1, looking in the direction rof the arrows, Fig. 3 is a detailhorizontal section taken in the ,plane of the line B-B of Fig. 1,looking in the directipn of the arrows, and Figs. 4,5, 6, 7 andy 8, are

detail vertical sections taken in the plane of the line C-C of Fig. 3,showing the piston and sleeve valves in various positions, the operatingmeans for ther piston and valves being indicated diagrammatically intheir relative positions in each ligure.`

The crank shaft 1 is suitably mounted in a casing' 2, which shaft isprovided with a piston rod 3 connected toa piston 4 which reciprocateswithin an inner cylinder 5. The head and side walls of this innercylinder 5 are jacketed and an inlet 6 is provided at `the bottom of theinner cylinder for the introduction of the cooling medium. rlhis innercylinder 5 is-supported on the casing 2 in a `fixed position by anysuitable means.

An outer cylinder 7 surrounds the inner cylinder 5 and is spacedtherefrom and head and side walls of the outer cylinder 7 are alsojacketed and' the cylinder is provided with lan outlet 8 for thecoolingf medium, it being understood that a circulation of the cooling*medium is provided for by any suit able means, not shown herein. Theouter cylinder Z 'is held in a fixed position by mounting itsheaddirectly upon the head of Specification of Letters Patent.

Yatentedlleb. 6, 1.917.

, Application filed December 28, 1915. Serial No. 69,021.

the inner cylinder and by providing the side plates 9.

Ports 10 bring the cooling space of the'inner cylinder jacket into opencommunication with the cooling space of the outer cylinder jacket.

The inner end wall 11 of the inner cylinder is preferably made -flat andthe inner cylinder is provided with suitable inlet and outlet ports 12and 18, respectively, located adjacent to the inner end wall 11 andleading through the inner cylinder jacket to the exterior thereof.

The outd'er cylinder 7 is provided with suitable inlet and outlet ports14 and 15, respectively, arranged" in alinement with. the inlet andoutlet ports 12 and 13, respectively, of the inner cylinder, which portsin the outer cylinder' lead through the acket and open to c the innerand outer walls of said outer cyl inder.

The admission of the motive fluid to the inlet ports la of the outercylinder may be provided for` in any suitable manner.

Inner and outer telescopingsleeve valves `outlet ports 20 and 21,respectively, -ar

ranged to be brought into and out of coaction with each other and theoutlet ports 13 and 15 of the inner and outer cylinders, re'

spectively. l

The inner sleeve valve is connected by a rod 22 to a crank shaft 23suitably mounted inthe casing 2 and the outer sleeve valve is connectedby a rod 24 to a crank shaft 25 alsd suitably mounted in the casing 2.

,These two crank shafts are driven in the same direction as the crankshaft 1 and at one-half the rotary speed thereof. In the presentinstance, 'throughthe gears 26, 27

Suitable packing rings 30, 31., are provided in the outer Wall of theinner cylin der above and below the `inlet and outlet vit:

ports 1Q, 13, for engagement with the inner sleeve valve 16.

The relative movements of the sleeve vvalves with respect to the pistonare such ving downwardly and the outer sleeve valve traveling upwardly.The inlet ports of the inner and outer sleeve valves close communicationbetween the inlet ports 12 and 14,

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by a movement of the sleeve valve ports in a downward direction, theactual closing occurring at the bottom of the inlet port 12.

The outlet ports of the inner and outer sleeve valve open communicationbetween the outlet ports 13 and 15 of the inner and outer cylinders.respectively, by a movement in an upward direction, the actual openingtaking place at the bottom of the outlet port 13 of the inner cylinder.These outlet ports of the inner and outer sleeves close communicationbetween the cylinder at the ports 13 and 15 by a movement of the sleeveports in opposite directions, "the inner sleeve valve travelingdownwardly and the outer sleeve valve traveling upwardly, the actualclosing occurring at thetop of the outer cylinder outlet port 15.

The relative movements of the sleeves and their ports with respect tothe movement of the piston, can be readily followed by refer- .ene toFigs.. 4 to 8 inclusive.

In Fig. 4 the communication between theV inlet ports 12 and 14 has justbeen closed and the piston 4 has started on its upward or compressionstroke.

In Fig. 5, the compression stroke of the piston' 4 has been completedand the piston is about to startl downwardly on its expansion stroke.Both the inlet and outlet ports are still closed.

In Fig. 6 the piston 4 is about completing its expansion stroke and theexhaust ports are just starting to be opened.

In ll` ig. 7 the piston 4 has almost completed its burned gasesexpulsion stroke and the outlet ports are ust about to be closed.

In l4` ig. 8 the work piston is just about starting its suction strokeand the inlet ports are just opening to admit the fresh supply of motivefluid.

1t is to be understood that the movements of the parts are so timed thatthe `full opening of the inlet and exhaust ports occur at the propertimes to obtain the liest effects, the timing herein illustrateddiagrammatically being one which I havel found to be etlective.

By opening the outlet port of the inner sleeve oil' the bottom of theoutlet port of the inner cylinder. it will be seen that the packingrings above and below the outlet port 13 are fully protected from theblast of the escaping burned gases, thus inateri-- l ally prolonging thelife of these packing rings and permitting aibetter lubrication thereof.

.In'the lubrication of thelworking parts of this engine, I provide onesystem of lubrication for the piston and another system of lubricationfor the sleeve valves and by these meansV I am enabled to accuratelyadjust tlie lubrication. In the present instance I have shown thelubrication of the piston by the usual recirculating oiling system inwhich the oil is introduced to the crank shaft 1 from the circulatingpump, not shown. through lthe feed pipe 32. and is led from the pan 33through a suitable connec'- tion. also not shown, back to thecirculating pump. i

The oil thrust from the cranks into the inner cylinder serves tolubricatc the piston, as is usual.

The sleeve valves may be lubricated b v a non-circulating oiling system,as, for in stance, by a feed pipe 34 leading from a suitable oilreservoir, not shown. This feed pipe communicates with a verticalchannel 35 passing through the heads of the outer and inner cylinders,said channel being provided with suitable ports 3G leading outwardly tothe"outer surface of thc inner The inner and outer sleeves may beprovided with through ports 37, 38, respectively. which are brought intoand out of communication with each other and with the ports 36. l

If so desired, oil ports 39 may be provided leading from the interior ofthe inner cylinder to the exterior thereof near the bottom of thecylinder, as an additional oiling means for the work piston.

From the above description, it will be seen that the working pistonslides in a coo-led Acylinder and that the telescoping sleeve valvesslide between-cooled surfaces, the inner sleeve. valve sliding on thecooled surface of the inner cylinder and the outer sleeve valve slidingon the cooled surface of the outer cylinder. This arrangementeffectually prevents the overheating of the piston and the sleevevalves, thereby rendering the lubrication of the piston -and sleevevalves more effective, and economic.

By locating the .telescoping sleeve valves exterior to the workingcylinder and cooling cylinder, I am enabled to produce eflicient enginesof any desired bores even down to very small bores without widening thecylinder ports to such an extent as would require an undue travel of thesleeve valves. I have also eliminated all side thrust on the sleeves andhave so arranged the sleeves as to materially facilitate access thereto.

By placing the packing or expansion rings or the inner sleeve valve onthe cooled surface of the inner cylinder, all liability of the ringssticking from undue heat is obviated. Also the -relative movements ofthe sleeve 7 port onto the top of the cylinder valves whereby theadmission of the motive 'fluid is obtained by the opposite opening ".thepiston andthe sleeve valves, I am enabled to Asimultaneously supply therelatively large amount of oil'needed to lubricate the pistonA (whoselinear -travel is large) and the relatively small amount of oil neededfor properly lubricating the sleeve valves (whose linear travel issmall), thus reducing, to a minimum, the smoking of the engine at theexhaust; an objectionable fea-- ture of sleeve valve engines as usuallyconstructed.

I have found thatI a circulating oiling system is well adapted foroiling the piston andl a non-circulating oilingr system is welladapted'. for oiling the sleeve valves. A

"By locating the inlet and outlet ports of the inner cylinder adjacentto the flat end wall of v.the cylinder', the trapping of the burnedgases in the combustion space above the pistonvis preventedl and thethorough scavenging of the said space is insured.

lt is evident i that lchanges may be resorted to in the-form,construction and arrangement of the several parts withoutdeparting fromthe .spirit and scope of my invention; and hence l' do not wish to limitmyself strictly to the structure herein set forth, but

What I claim is:

l. An explosion engine comprising a fixed cylinder, 'inner and outertelescoping sleeve valves working thereon and a piston work ing in saidcylinder, said sleeve valves andv cylinder having suitable inlet andoutlet portsarranged to be brought intor and out of coaction by themovement of said sleeve valves, the sleeve valve inlet ports opening bya. movement of thesleeve valves in opposite directions and closing atthe bottomy of the .cylinder port by a movement of the sleeve valves inthe same direction.

2. An explosion engine comprising a fixed cylinder, inner and outertelescoping sleeve valves working thereon and a piston working in saidcylinder, saidsleeve valves and cylinder having suitable inlet andoutlet ports arranged to be brought into and out of coaction by themovement of said sleeve valves, the sleeve valve inlet ports opening bya movement ofthe sleeve vaives in opposite directions from a point aboutmidwayv between the top and bottom of the cylinder port and closing atthe bottom 4of the cylinder port by a moyement of the sleeve valves inthe same direction.

3. An explosion engine comprising fixed inner and outer concentriccylinders, inner and outer telescoping sleeve valves working betweensaid cylinders and a piston working in the inner cylinder, said sleevevalves and cylinders having suitable inlet andv outlet ports arranged tobe brought into and out of coaction by the movement of said sleeves, thesleeve valve inlet ports opening by a movement of the sleeve valves inopposite directions and closing at the bottom of the cylinder ports by amovement of the sleeve valves in the same direction.

4. An explosion engine comprising xed inner ,and` outer concentriccylinders, inner and outer telescoping sleeve valves working betweensaid cylinders and a piston working inthe inner cylinder, said sleevevalves and cylinders having suitable inlet and outlet ports arranged tobe brought into and out et coaction by the movement of said sleeves, thesleeve valve inlet ports opening by a movement Aof thesleeve valves inopposite directions from a point about midway between the top and bottomof the cylinder ports, and closing at the bottom of the cylinder portsbya movement of the sleeve valves in the same direction. y

5. An explosion engine comprising a fixed cylinder, inner and outertelescoping sleeve valves working thereon and a piston working in saidcylinder, said sleeve valves a'r1d cylinder having suitable inlet andoutlet ports arranged to be brought into and out of coaction by themovement of said sleeve valves, the sleeve valve inlet ports opening bythe downward movement of the inner sleeve and upward movement of t eouter sleeve, and closing at the bottom of the cylinder port by adownward' movement of both sleeve valves. .i

6. An explosion engine comprising a fixed cylinder, inner and outertelescoping sleeve valves working thereon and a piston Working in saidcylinder, said sleeve valves and cylinder having suitable inlet andoutlet ports arranged to be brought into and out of coaction by themovement of said sleeve valves, the sleeve valve inlet ports'opening bythe downward movement of the inner sleeve and upward movement of theouter sleeve fromla point about midway between the vtop and bottom ofthe cylinder port and closing at the bottom of the cylinder port by adownward movement of both sleeve valves.

out of coaction by the movement of said 7. An explosion enginecomprising fixed inner and outer concentric cylinders, inner and outertelescoping sleeve valves working between said cylinders and a pistonworking in the inner cylinder, said sleeve valves and cylinders havingsuitable inlet and outlet ports arranged to be brought into and out ofcoaction by the movement of' said sleeves, the sleeve valve inlet portsopening by the downward movement of the inner sleeve and upward movementof the outer sleeve and closing at the bottom of the cylinder ports by adownward movement of both sleeve valves.

8. An explosion engine comprising fixed inner and outer concentriccylinders, inner and outer telescoping sleeve valyes working betweensaid cylinders and a piston working in the inner cylinder, said sleevevalves and cylinders having suitable inlet and outlet ports arranged tobe brought into and out of coaction by the movement of said sleeves, thesleeve valve inlet ports opening by the downward movement of the innersleeve and upward movement of the outer sleeve freine,

an upward movement and closing onto the top of the cylinder port by themovement` of the sleeve valves in opposite directions.

10. An exploslon engine compr1s1ng a fixed cylinder, inner and outertelescoping' sleeve valves working thereon and a piston working in saidcylinder, said sleeve valves and cylinder having suitable inlet vandoutlet ports arranged to be brought into and out of coaction by themovement of said sleeve valves, the sleeve valve outlet ports openingrofi from the bottom of the cylinder port by an upward movement, with theinner sleeve valve traveling faster than theouter sleeve valve, andclosing onto the top of the cylinder port by the movement of the sleevevalves in opposite directions with the inner sleeve valve travelingslower than the outer sleeve valve.

11. An explosion engine comprising xed inner and outer concentriccylinders, inner and outer telescoping sleeve valves working betweensaid cylinders and a piston work ing inthe inner cylinder, said sleevevalves and cylinders having suitable inlet and outlet ports arranged tobe brought into and remesa sleeves, the sleeve valve outlet portsopening oif from the bottom of .the cylinder ports by an upwardmovement, and closing onto the top of the cylinder ports by the movementof the sleeve valves in opposite directions.

12. An explosion engine comprising fixed l ports by an upward movementwith the iny ner sleeve valve traveling faster than the outer sleevevalve, and closing onto the top of the cylinder ports by the movement ofthe sleeve valves inopposite directions with the inner sleeve valvetraveling slower than the outer sleeve valve.

13. An explosion engine comprising a lixed cylinder, inner and outertelescoping sleeve valves working thereon and a piston working in saidcylinder, said sleeve valves and cylinder having suitable inlet andoutlet ports arranged to be brought into and out of coaction by themovement of said sleeve valves, the sleeve valve outlet ports openingoff from the bottom of the cylinder port by an upward movement, andclosing onto the top of the cylinder port by a downward movement of theinner sleeve valve and an upward movement of the outer sleeve valve.

14.v An explosion engine comprising a lined cylinder, inner and outertelescoping sleeve valves working thereon and a piston working in saidcylinder, said sleeve valves and cylinder having suitable inlet andoutlet ports arranged to be brought into and out of coaction by themovement -of said Sleeve valves, the sleeve valve outlet ports openingofi' from the bottom of the cylinder port by an upward movement with theinner sleeve valve traveling faster than the outer sleeve valve andclosing onto the top of the cylinder port by a downward move ment of theinner sleeve .valve and an up ward movement of the outer sleeve valvewith the inner sleeve valve traveling slower than the outer sleevelvalve.

15. An explosion engine comprising fixed inner and outer concentriccylinders, inner and outer 'teiescoping sleeve. valves working betweensaid cylinders and a pistonworkmg in the inner cylinder, said sleevevalves and cylinders having suitable inlet and outlet ports arrangedtobe brought into and out of coaction by the movement of said sleeves, thesleeve valve outlet ports opening off from the bottom of the cylinderports by an upward movement and closing onto miesen the top of thecylinder ports by a, down.

ward -movement of the inner sleeve valve and an upward movement of theouter sleeve valve.

16, An'explesion engine comprising fixed inner and outer concentriccylinders, inner and outer telescoping sleeve valves working betweensaid cylinders and a piston Work ing in the inner cylinder, said sleevevalves and cylinders having suitable inlet and outlet ports arranged tobe brought into and out ofcoaction by the movement of said sleeves, thesleeve valve outlet ports opening off from the bottom of the cylinderports by an upward movement, with the inner` sleeve valve travelingfaster than the outer sleevevalve and closing onto the top of thecylinder ports by a downward movement of the inner sleeve valve and anupward movement of the outer sleeve valve with the inner sleeve valvetraveling slower than the outer sleeve valve.

In testimony, that I claim the foregoing as my invention, I have signedmy name this twenty-second day of December, 1915.

' FINLEY R. PORTER.

